ETE PORTO Wastewater Treatment Plant - São Mateus, Espírito Santo, Brazil

ETE PORTO is a municipal wastewater treatment plant located in the Porto district of São Mateus, in the state of Espírito Santo, Brazil. The plant serves a small population of 888 residents and operates with secondary treatment, which is appropriate for communities of this scale in the region. As a secondary treatment facility, ETE PORTO provides biological treatment to reduce organic matter and suspended solids before discharge. The plant's discharge volume is recorded at 72.01 cubic meters per day. In Brazil, wastewater treatment plants are regulated under national standards set by CONAMA (Conselho Nacional do Meio Ambiente), which establish effluent quality requirements for different receiving water bodies. The plant is located within 10 kilometers of the Atlantic coast, meaning its treated effluent ultimately reaches coastal waters. The discharge contributes to the protection of local water resources and the marine environment by reducing untreated sewage inputs. The surrounding area includes the São Mateus River basin, which drains into the Atlantic Ocean and supports diverse aquatic ecosystems.

The plant's treated effluent discharges into the local drainage network that flows toward the Atlantic Ocean via the São Mateus River basin. This coastal region features mangroves and estuarine habitats that are ecologically sensitive, supporting fish, crustaceans, and migratory bird species. Proper treatment helps maintain water quality in these downstream environments.